“7天3次，骗子骗走我母亲95万元”
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A quadtree does the same thing for two-dimensional space. It takes a rectangular region and divides it into four equal quadrants: northwest, northeast, southwest, southeast. If a quadrant has too many points in it, it subdivides again and again. Each subdivision creates smaller and smaller cells where points are densely packed.
or not that many objects can fit on a page.
World Service,·23 Feb 2026,·26 mins